So if you are looking to buy modded controllers for PS4, then the MegaMods gamepad is one of the best modded PS4 controllers for sale. The mods of these gamepads are back buttons, extended triggers, rapid-fire, fast reload and much more. The purpose of modified controllers is to enhance the gaming experience to increase performance, speed, accuracy, ease of use, etc. A modded PS4 controller is a regular controller which are modified in a way that adds new features, functions, and capabilities which are absent in the original one.